package sg.edu.nus.iss.vmcs.entity.simuator.dao;

import java.io.IOException;
import java.util.List;
import java.util.Map;


public interface IPropertiesDAO {
	
	boolean update(String key, String value) throws IOException;
	
	Map<String,String> getKeyValueByAtribute(String attribute) throws IOException;
		
	int getNumOfItems();
	
	String getAttributeValue(String key) throws IOException;	
}
